while listening to my system, during a song I noticed the bass went neutral & the instruments disappeared into the back of the room...
Did you really connect 8 speakers to just the one reciever? If so then you could easily have a low ohm situation that tripped a protective circuit. But then I don't understand "the back of the room." Are a couple speakers connected to something else?
@Eric Yes I did. The clarity, etc. is there but the sound of being in the concert hall now sounds like I'm listening in a bar with bad acoustics.
@Miller carbon yes 8, because they were there from my A/V system & I figured hell give it a go & the system has been doing quite fine for almost a year. I can't turn it to loud without the wife complaining. If it's a protective circuit, where would I begin looking for it?
When going from a multichannel receiver to a stereo receiver, driving the same 8 speakers, things are definitely going to sound different. The DRA 355R receiver is 40 watts, and not rated to play below 4 ohms. If the prior receiver was an avr unit, the speakers were being driven by separate amplifiers within the chassis. I am not surprised by what you are hearing. And, depending on whether you wired the speakers in series or parallel, I am surprised you have / have not tripped the protection circuits of the Denon receiver, as mentioned by millercarbon above.
This is the part that gets me:
while listening to my system, during a song I noticed the bass went neutral & the instruments disappeared into the back of the room
Is this correct? This wasn’t something that happened who knows when and then you noticed, this is something that actually happened WHILE you were listening???
Because what I said about the protective circuit is based on this one statement. That this is something that happened during a song. Everyone else’s ideas would be things that happened whenever, who knows, and then you just happened to notice it.
If its something that happened suddenly and during play then it has to be either a protective circuit that tripped or your receiver has a problem. Which by now if its been off and on again then it won’t be a circuit and Houston, we have a problem.
To check this out disconnect all but one pair of speakers. See how it sounds with just one pair. If your receiver has multiple speaker terminals then check that one pair with each set of terminals. Then disconnect that pair and do the same with the next. And so on, until you have confirmed all speakers work properly when connected one at a time. Then if they all work individually connect additional pairs of speakers one pair at a time checking each time to see how they sound.
Thank you everyone for helping.
I can't seem to find a service manual for this unit to be able to troubleshoot so if I take this to someone to check it out, what parameters do they have to go by? Maddening I tell you. I thought about buying a new one but that is a risk in of itself because I can't see, hear or even get a response from some sellers ( afraid to answer the important questions by past results).
I have a Nakamichi at work that I'll bring home Friday to see if the sound comes back.
Anybody out here a Denon technical guru? Probably not but worth a shot